<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title>
    <script type="text/javascript" src='angular.js'></script>
</head>
<body ng-app=''>
<input ng-model='a'>+<input ng-model='b'>=<div ng-bind='a+b'></div>

</body>
</html>